Improvement in electrical indicators for elevators



l. H El) R EY.

l ndiato rs for Elevators.

Patvented April l. 1873.

Electrical No. l37,422.

AM Moro-LITHOGRAPHIE* Ca N. y ("osaonne's macias) Wma; f

UNITED STATES PATENT OFFICE.

JAMES II. COREY, OF NEIV YORK, N. Y.

IMPROVEMENT IN ELECTRICAL INDICATORS FOR ELEVATORS.

Specification forming part of Letters Patent No. 137,422, dated April 1, 1873; application tiled November 14, 1872.

To all whom t't may concern:

Be it known that I, JAMES H. CoREY, ofthe city. county, and State ot' New York, have invented an Improvement in Electric Indicators for Elevators, ot' which the following isa specitication:

Thisinvention relates to a combination, with the car or platform of an elevator, ot' an indicator therein or thereon, acting either by visible or audible signals, or both, and operated by electrical impulse from each or any ot' the several iioors ot a building, whereby the attendant in charge of the car may be informed ot' the particular door or story on or at which the car is required. My improvement consists in a system of electrical connections whereby certain or each ofthe several ropes and guideposts ot' the elevator may be used for establishing the circuit, thus dispensing with the employment of a number of flexible or movable metallic conductors arranged to lead from the indicator to the several oors and in connection with the operating-battery, as in a previous pending1 application for patent by me.

By this improvement I simplify the electrical connections by utilizing the mechanical means necessary for the Working of the elevator, and do away with much or any liability to derangement of the conductors, besides being enabled to leave the interior of the car free from obstruction by the conductors and accessible it' desired from all sides of it.

The accompanying drawing, Which forms part of this specification, represents a sectional elevation of a hoistway intersecting a series of iioors, and cab of an elevator therein, together with an electro-magnetic indicator arranged Within the cab, and certain Wires or conductors used in part to form the circuit and serving to connect the indicator with circuitclosers on the different doors, and, through the ropes or guides of the elevator, or both, with a battery having a fixed relation and common to all the Wires leading to or from the several floors.

A is the hoistivay, and B the cab or traveling platform ofthe elevator. C is the hoistingrope; D, the counterbalance-rope of the cab; and E, the guide-rope, by which the attendant in charge of the cab is enabled to stop or sart and control the movement up or down of the cab, all as in other elevators. F F are the guides, arranged either up the sides or corners of the hoistway to steady and direct the cab in its travel, and which, as Well as the ropes, are ot' inet-al, suitably insulated, to form electric conductors. G1 G2 G2 Gtrepresent dit'- ferent floors of a building intersected by the hoistway, and from each ot' which it is desired to establish communication With the attendant in the cab by means ot' an electro-magnetic indicator, H, Within or on the cab, and circuit-closers K1 K2 K3 K4 at the diii'erent tloors. Said indicator may either be a visible or audible one, or both, and of any suitable construction 5 thus it may be similar to those now used in hotels tor signaling from any one or more of the apartments to the office or other part of the hotel, and be provided with a series ot' numbered signals, l 2 3 4, Which correspond With the rooms or tioors G1G2 G3 G4, and which are, respectively, exposed or adjusted to direct attention accordingly as the circuit is closed at any one or more of the floors. L L are cups, connected by a Wire, b, and forming the two poles of the battery with which the Wires c d are connected, respectively. Said battery is preferably arranged above or at top of the hoistway; but it may be at the bottom, or otherwise disposed. The one battery-Wire, c, runs down the side ot' the hoistway and has branch Wires e1 c2 c3 e4 to the circuit-closers K1 K2 K3 K4. The other battery-wire, el, connects with the one guide F of the hoistway. Arranged up or down the side ofthe hoistway are iioorwires f 1 f 2 f 3 j'4 connecting at their one end with the circuit-closers Kl K2 K3 K4 at the several loors, respectively, and at their other end with the ropes or guides ot' the elevator, or with supports in electrical connection there- With; thus, the one Wirefl connects With the balance-rope D through its overhead drum or pulley 5 the Wire f 2 with the hoisting-rope C; the Wirej'S with the guide-rope E 5 and the Wire f4 With the iixcd guide F. The balancerope D, hoisting-rope C, guide-rope E, and guide-post F thus serve, when the circuitclosers K1 K2 K3 K4 are operated, as conductors in connection with the battery-Wire c and door Wires or conductors f1f2f3f4 to carry the current by or through branch Wires g1 g2 g2 g* from the battery to the one end or pole of the several magnets, respectively, which control the signals l 2 3 4 of the indicator H, the other ends or poles of said magnets being connected, to complete the circuit, by branch wires h, h2, h3, h4, and with the guide-post F and battery-wire d. The wires g4 and i may or all of them.

Of course the disposition of the several conductors may be changed, and it is not necessary that all the working ropes and guideposts of the elevator should be used. For an audible signal only, when it is not necessary to indicate the particular iioor from which the call is made,'then the two guide-posts, or either two ot the ropes, or one guide-post and one rope will answer to complete the circuit; but for a visible signal announcing the particular floor at which the cab is wanted, all the ropesan'd guide-posts may be used, as hereinbefore described. Furthermore, the invention is not restricted to signaling from any particular number of oors.

What is here claimed, and desired to be se cured by Letters-Patent, isl The employment of the guide posts and working ropes of the elevator, or either, as conductors for operatin g, by electrical impulse from each or any of the several floors, an indicator carried by the cab or traveling platform, substantially as specilied.

JAS. H. COREY.

Witnesses:

MICHAEL RYAN, FRED. HAYNES. 

